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BIO 111 Exam #1 Questions And Accurate Answers
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BIO 111 Exam #1 Questions And AccurateAnswers 2024-2025
When did Earth form? -Answer 4.6 billion years ago
The first fossils were what type of organism? - Answer Prokaryotes: stromatolite
What domains do the prokaryotes make up? -Answer Bacteria and Archaea
Prokaryotes are. -Answer unicellular
Prokaryotic DNA is -Answer circular
What helped the abiotic synthesis of small organic molecules? -Answer UV light and
Lightning
Protocell - Answer An abiotic precursor of a living cell capable of maintaining an internal
membrane-like structure with different internal chemistry. Can reproduce and preform
metabolism.
Protocell Characteristics - Answer Self-assembly, absorption of RNA, and reproduction.
RNA - Answer Earliest genetic material.
Cocci - Answer -Sphere shaped
-Singles, pairs, or clusters.
, Bacilli - Answer -Rod-shaped
-Normally in algae
Vibrio - Answer -Comma shaped
Spirillum - Answer -Spiral shaped
Spirochete - Answer -Tightly spiraled
Cell Wall - Answer -Maintain Cell Shape
-Protects the cell
-Prevents the cell from bursting
Bacteria Cell Wall - Answer Contain peptidoglycan
Archaea cell wall - Answer Contains polysaccharides and protein
Gram-positive - Answer -Simple cell wall
-Thick peptidoglycan layer
-Stains purple
-MRSA, Toxic Shock, and Strep Throat
Gram-negative - Answer -Complex cell walls
-Thin peptidoglycan layer sandwiched between two membranes.
-More resistant to antibiotics.
-Stain light pink
-Salmonella, pneumonia, UTI, and Gonorrea
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